重點(diǎn)講解：
1. come across 偶然發(fā)現(xiàn)；偶然遇見(jiàn)；
例句：I came across an old friend yesterday.
我昨天碰見(jiàn)一位老朋友3_,m,((H|+6~*#。
2. write down 寫(xiě)下；記下；
例句：Only by writing things down could I bring some sort of order to the confusion.
只有把東西記下來(lái)，我才能從混亂中理出些頭緒來(lái)GvU6mG+*SJ42eRTJUL。
3. cross off (從名單上)畫(huà)掉，刪掉 ；
例句：I checked the chart and found I had crossed off the wrong thing.
我檢查了一下圖表，結(jié)果發(fā)現(xiàn)我錯(cuò)刪了東西;Kw^8tZd0M;(9sI。
4. once in a lifetime 終生難遇的；千載難逢的；
例句：It's a once in a lifetime chance.
這是一生難得的機(jī)會(huì)P69DXRHZ^ey。